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Definition of arthropod noun from the Oxford Advanced American Dictionary

 

arthropod

 noun
noun
NAmE//ˈɑrθrəˌpɑd//
 
(biology)
 
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an invertebrate animal such as an insect, spider, or crab, that has its skeleton on the outside of its body and has joints on its legs
See the Oxford Advanced Learner's Dictionary entry: arthropod